Refrigerating apparatus



May 12, 1936. c. w. scHERL-:R

A REFRIGERATING APPARATUS A riginl Filed Jan. 5l. 1927 avv www/j? Wy @Hann .Risued May 1,2, 1936 f Re. `19,9164

Original No. 1,887,948, dated November 15, 1932,

Serial No.-164,7.?.2,v January 31, 1927. y

Application for reissue April 21, 1933, Serial No.V 667,290

6 Claims.

This invention relates to refrigerating appa- 'ratus. It is particularly, but not exclusively, applicable to food or storage cabinets provided with air-cooled refrigerating machines.

One of the objects of the invention is to provide improved means for cooling refrigerating machines by air.

Another object is to provide a household refrigerating cabinet with improved means for'cir- 10 culating cooling air over its refrigerating machine.

Further objects and advantages of the present inventionwill be apparent from the following description, reference being had to the accompanying drawings, wherein a preferred form of embodiment of the present invention is clearly shown. In the drawing:

Fig. 1 is a front elevation of the household cabeklv compartment. 'This heat is, in many cases, car- -30 ried oft' by air currents and dissipated in the atmosphere. My invention contemplates more effective circulation of the cooling air in such apparatus. To this end I provide a conduit having its intake at a low level to draw cool air from 35 the cooler layers of air in the room, and its outlet at a higher level, and place the refrigerating `luachine in the conduit. That is, the conduit may include the machine compartment.

Referring to the drawing, the cabinet com- 40 prises walls enclosing a cooling compartment I0, having a door Il, and a machine compartment I2 above the cooling compartment. chine compartment-may have louvres I3, to forml an air outlet. Preferably the side walls are com- ,45 posed of insulating members I l and impervious lining or facing members l5.- The facing members of the side walls are extended beyond the insulating members thereof to form the machine compartment, which is provided with a suitable 50 coverv I8. A conduit or ue I1 is formed in the back wall I8, preferably by spacing the insulating member Il from the facing. member I 5. kIf desired an additional facing member I9 may be provided for the insulating member to :protect it 55 from moisture.

The ma-v.

\The flue I1 has its intake 20 near the floor, and to provide for admission of sumcient air, the cabinet may be mounted onlegs 2|. The flue discharges into the machine compartment, thus forming with the latter a continuous conduit for the circulation of air.

The refrigerating machine includes a motor 22, condenser 23, and fan 24 driven by the motor. When the motor is running, the fan moves air through the conduit to cool the condenser and i0 other parts of the machine, drawing air' in at and forcing it out at I3.

This arrangement has various advantages. By placing the outlet of the conduit -at a point remote from the inlet, contamination of the cool l5 air supply by expelled warm air is prevented. The intake is at the level of the coldest` air in the room, thus providing the maximum cooling eiiect. Furthermore the location of the outlet above theglevel of the inlet permits the heat of 20 I the machine to induce a natural circulation in the conduit when the motor and fan stop. This further cools the machine.

While the form of embodiment of the present invention as herein disclosed, constitutes a pre- 25 i'erred form, it is to be understood that other bforms might be adopted, all coming within the scope of the claims which follow.

What is claimed is as follows:

1. In a refrigerating apparatus a cabinet hav-` ing a plurality of side walls enclosing a refrigerat,

` ing compartment and a machine compartment above the refrigerating compartment, the side I walls including insulating members and facing members, a'facing member 'spaced from Vone of 35 said insulating members to provide a conduit for cooling air communicating withY the machine compartment and having its inlet near the bottom of the cabinet.

2. Ina refrigerating apparatus, aplurality `of 40 vertical walls comprising insulating members and facing members, the insulating members enclosing a refrigerating compartment and certain of the facing members beingextended beyond the insulating members to form a machine compartment above the refrigerating compartment, a facf ing member spaced from one of said insulating members to provide a conduit for cooling air communicating with the machine compartment and having its inlet near the bottom of the cabinet. f 50 3. Refrigerating apparatus comprising in combination a cabinet having side walls including insulating members andfacing members, the insulating members forming a refrigerating compartment and certain of the facing members beihg machine compartment, a facing member spaced from one of said insulating members to provide a conduit for conducting cooling air from a point near the bottom of the cabinet into the machine compartment; and a unitary refrigerating apparatus including an insulating wall forming a partition between the cooling compartment and machine compartment, an evaporating unit secured to the underside of said partition, and an aircooled condensing unit secured to the upper side of said partition, said condensing unit including a fan for drawing air through said conduit.

4. In refrigerating apparatus, a plurality of vertical walls comprising insulating members and facing members, the insulating members enclosing a cooling compartment, 'and certain voi! the facing members being extended beyond the insulating members to form a machine compartment, a facing member spaced from one of said insulating members to provide a conduit for cooling air communicating with the machine compartment.

5. A refrigerating apparatus comprising, a cabinet, said cabinet includinga plurality of upright walls .and other adjoining walls defining a food storage compartment and a machine compartment above the food storage compartment, the upright walls surrounding said food storage com- ,V 19,Q64 extended above the insulatingmembers to form a partment comprising insulating portions and facing members overlying the insulating portions,r a facing member spaced from one of the facing members of one of saiduprightwalls to provide an air iiue therebetween, and said air ue communicating with the machine compartment and extending to the lower portion of said cabinet and opening exteriorly of the cabinet at its lower end.

I6. A refrigerating apparatus comprising, al cabinet, said cabinet including a plurality of upright walls and other adjoining walls defining a food storage compartment and a machine compartment above the food storage compartment, said machine compartment being provided with an air inlet opening and an air outlet opening, the upright f 

